<template>
  <div>
      <!-- 面包屑导航 -->
       <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品分类</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
        <!-- 添加分类按钮 -->
        <el-row>
            <el-col>
                <el-button type="primary" @click="showAddCateDialog">
                    添加分类
                </el-button>
            </el-col>
        </el-row>

        <!-- 表格 -->
        <Tree-table class="treeTable" border index-text="#" :show-index="true" :data="catelist" :columns="columns" :selection-type="false" :expand-type="false">
          <!-- 是否有效 -->
            <template slot="isok" slot-scope="scope">
                <i class="el-icon-success" v-if="scope.row.cat_deleted==false" style="color:lightgreen;"></i>
                <i class="el-icon-error" v-else></i>

            </template>

            <template slot="order" slot-scope="scope">
                    <el-tag size="mini" v-if="scope.row.cat_level == 0">一级</el-tag>
                    <el-tag type="success" size="mini" v-if="scope.row.cat_level == 1">二级</el-tag>
                    <el-tag type="warning" size="mini" v-if="scope.row.cat_level == 2">三级</el-tag>
            </template>

               <template slot="opt" slot-scope="scope">
                   <el-button size="mini" type="primary" @click="editcate(scope.row.cat_id)" icon="el-icon-edit">编辑</el-button>
                   <el-button size="mini" type="danger" @click="daleteCate(scope.row.cat_id)" icon="el-icon-delete">删除</el-button>
                        </template>
        </Tree-table>




        <!-- 分页区域 -->

         <el-pagination
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="querInfo.pagenum"
      :page-sizes="[3, 5, 10, 15]"
      :page-size="querInfo.pagesize"
      layout="total, sizes, prev, pager, next, jumper"
      :total="total">
    </el-pagination>
    </el-card>

<!-- 添加分类的对话框 -->
<el-dialog
  title="添加分类"
  :visible.sync="addCatDialogVisible"
  width="50%"
  @close="addCateDialogClosed"
>
<!-- 添加分类的表单 -->
 <el-form :model="addCateForm" :rules="addCateFormRules" ref="addCateFormRef" label-width="100px" >
  <el-form-item label="分类名称：" prop="cat_name">
    <el-input v-model="addCateForm.cat_name"></el-input>
  </el-form-item>

    <el-form-item label="父级分类：" >
          <el-cascader
          :clearable="true"
          :change-on-select="true"
    v-model="selectedKeys"
    :options="parentCateList"
    :props="cascaderProps"
    @change="parentCatechanged"></el-cascader>
  </el-form-item>
 </el-form>

  <span slot="footer" class="dialog-footer">
    <el-button @click="addCatDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="addCate">确 定</el-button>
  </span>
</el-dialog>

<!-- 编辑 -->
<el-dialog
  title="编辑"
  :visible.sync="editCatedialog"
  width="50%"
  @close="parentCateedit"
 >

<el-form :model="ruleForm" :rules="editrules" ref="editruleForm" label-width="100px">
  <el-form-item label="活动名称" prop="cate_name">
    <el-input v-model="ruleForm.cat_name"></el-input>
  </el-form-item>
</el-form>



  <span slot="footer" class="dialog-footer">
    <el-button @click="editCatedialog = false">取 消</el-button>
    <el-button type="primary" @click="addEdit">确 定</el-button>
  </span>
</el-dialog>



  </div>
</template>

<script>
export default {
data() {
    return {
        //查询条件
        querInfo:{
            type:3,
            pagenum:1,
            pagesize:5
        },
        //商品分类的数据列表
        catelist:[],
        total:0, //总数据数量
        columns:[
            {
                label:'分类名称',
                prop:'cat_name'
            }, {
                label:'是否有效',
                type:'template',
                template:'isok'
            },{
                label:'排序',
                type:'template',
                template:'order'
            },
            {
                label:'操作',
                type:'template',
                template:'opt'
            }
        ],//为table指定列的定义
        addCatDialogVisible:false,//控制分类的显示与隐藏
        addCateForm:{
            cat_name:'',
            cat_id:0,
            cat_level:0
        },//添加分类表单的数据对象
        addCateFormRules:{
            cat_name:[
                { required: true, message: '请输入分类名称', trigger: 'blur' },
            ]
        },//添加分类表单的验证规则对象
        parentCateList:[],
        cascaderProps:{
             expandTrigger: 'hover',
            value:'cat_id',
            label:'cat_name',
            children:'children'
        },//指定级联选择器配置对象
        selectedKeys:[],//选中的额父级分类
        editCatedialog:false,
        ruleForm:{
            cat_id:0,
            cat_name:''
        },
        editrules:{
            cat_name:[
                 { required: true, message: '请输入分类名称', trigger: 'blur' },
            ]
        }
    };
},
created(){

this.getCateList()

},
methods:{
async getCateList(){

  const {data:res}= await this.$http.get('/categories',{
        params:this.querInfo
    })
    if(res.meta.status != 200){
        return this.$message.error('获取商品分类')
    }

    //把数据列表赋值给catelist

   this.catelist = res.data.result
   this.total = res.data.total

},
//监听pagesize的改变
handleSizeChange(newSize){
 this.querInfo.pagesize = newSize
 this.getCateList()
},//监听pagenum
handleCurrentChange(newPage){
    this.querInfo.pagenum = newPage
    this.getCateList()

},
//点击展示添加分类对话框
showAddCateDialog(){
    this.addCatDialogVisible = true
    this.getParentCateList()
},
async getParentCateList(){//获取父级分类数据列表
  const {data:res}= await this.$http.get('categories',{
        params:{type:2}
    })
    if(res.meta.status != 200){
        return this.$message.error('获取父级分类数据失败')
    }

    this.parentCateList = res.data 

},
parentCatechanged(){
    if(this.selectedKeys.length > 0){
      this.addCateForm.cat_pid = this.selectedKeys[this.selectedKeys.length-1]
      this.addCateForm.cat_level = this.selectedKeys.length
      return
    }else{
        this.addCateForm.cat_pid = 0
this.addCateForm.cat_level =0
    }
},
//点击按钮添加新分类
addCate(){
    // console.log(this.addCateForm);
    this.$refs.addCateFormRef.validate(async valid =>{
        if(!valid) return

      const {data:res} = await this.$http.post('categories',this.addCateForm)
      if(res.meta.status !== 201){
          return this.$message.error('添加失败')
      }
      this.$message.success('添加分类成功')
        this.getCateList()
        this.addCatDialogVisible = false


    })

},
addCateDialogClosed(){ //重置添加表单的数据
this.$refs.addCateFormRef.resetFields()
this.selectedKeys = []
this.addCateForm.cat_level = 0
        this.addCateForm.cat_pid = 0

},
//点击编辑获取当前行的id
editcate(id){
    this.editCatedialog = true
    this.ruleForm.cat_id = id
},
// 重置表单数据
parentCateedit(){
this.$refs.editruleForm.resetFields()

this.ruleForm.cat_id = 0
this.ruleForm.cat_name = ''
},
// 编辑提交
async addEdit(){
    this.editCatedialog = false
   const{data:res} =await this.$http.put(`categories/${this.ruleForm.cat_id}`,{
       cat_name:this.ruleForm.cat_name

   }
    )

    if(res.meta.status != 200){
        return this.$message.error('提交失败')
    }
    this.$message.success('编辑成功')
    this.getCateList()

},
//删除
async daleteCate(id){

const out = await this.$confirm('此操作将永久删除, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(() => {
          this.$message({
            type: 'info',
            message: '已取消删除'
          });          
        });
    console.log(out);
        if(out == 'confirm'){
               const {data:res}= await this.$http.delete('categories/'+id)
   if(res.meta.status != 200){
       return this.$message.error('删除失败')
   }
   this.$message.success('删除成功')
    this.getCateList()
        }

}

}
}
</script>

<style lang="less" scoped>

.treeTable{
    margin-top: 15px;
}

.el-cascader{
    width: 100%;
}

</style>